About item SIZE: 75CM. Strengthens Arms, Legs, Shoulder, Back Muscles and Keeps Calories in Check Keeping You Agile, Flexible and Fit All Day Long.Package includes : (Gym Ball With Pump) It Inflates to a Diameter of 75CMS. Suits Well with Aerobics, Yoga, Pilates Exercises, Gym Workouts, Sports and Athletic Training...